function compute (method, fNumber, sNumber) {
  switch (method) {
  	case 'plus':
  	  return fNumber + sNumber
  	case 'minus':
  	  return fNumber - sNumber
  	case 'mul':
  	  return fNumber * sNumber
  	case 'div':
  	  return fNumber / sNumber
  	default:
  	  break
  }
}

export {
  compute
}